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ASTM C 965 : 1996 : R2007

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Practice for Measuring Viscosity of Glass Above the Softening Point
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

04-01-2007

CONTAINED IN VOL. 15.02, 2017 Defines the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass.

1.1 This practice covers the determination of the viscosity of glass above the softening point through the use of a platinum alloy spindle immersed in a crucible of molten glass. Spindle torque, developed by differential angular velocity between crucible and spindle, is measured and used to calculate viscosity. Generally, data are taken as a function of temperature to describe the viscosity curve for the glass, usually in the range from 1 to 10 6 Pa·s.

1.2 Two procedures with comparable precision and accuracy are described and differ in the manner for developing spindle torque. Procedure A employs a stationary crucible and a rotated spindle. Procedure B uses a rotating crucible in combination with a fixed spindle.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Committee
C 14
DocumentType
Standard Practice
Pages
5
ProductNote
Reconfirmed 2007
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM E 220 : 2013 : REDLINE Standard Test Method for Calibration of Thermocouples By Comparison Techniques

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